Enhanced Formation of Calcia-Gallia Glass by Containerless Processing

Author

J. K. Richard Weber
Dennis R. Merkley
Collin D. Anderson
Paul C. Nordine
C. S. Ray, Missouri University of Science and TechnologyFollow
D. E. Day, Missouri University of Science and TechnologyFollow

Abstract

Glass formation from melts of 44 CaO 56Ga₂O₃(mol%) was investigated under containerless conditions obtained by acoustically stabilized aerodynamic levitation in combination with laser beam heating. The critical cooling rate for glass formation was R_c<100°C/s, much less than values reported in the literature (R_c=550^o±120^o C/s and ca 350^oC/s) for pendant drops of this composition attached to Pt-Rh thermocouples. High values of R_c in pendant drop experiments were confirmed for the specimens used in this work.

Recommended Citation

J. K. Weber et al., "Enhanced Formation of Calcia-Gallia Glass by Containerless Processing," Journal of the American Ceramic Society, vol. 76, no. 8, pp. 2139 - 2141, Wiley-Blackwell, Aug 1993.

The definitive version is available at https://doi.org/10.1111/j.1151-2916.1993.tb08351.x

Department(s)

Materials Science and Engineering

Keywords and Phrases

Carbon dioxide lasers; Cooling; Gallium compounds; Heating; Laser applications; Laser beams; Lime; Melting; Structure (composition); Thermal effects; Thermocouples; Acoustically stabilized aerodynamic levitation; Calcia-gallia glass; Containerless glass processing; Laser beam heating; Pendant drops

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1993 Wiley-Blackwell, All rights reserved.

Publication Date

01 Aug 1993